Fig. 2: 3D interference and mechanism of texture generation.
From: Self-organized phase-transition lithography for all-inorganic photonic textures
a The calculated EPSs of the 3D interference field. b The simulated texture constructed by the SOPTL in the XZ plane. c The XZ view of the EPSs. The dotted curve is the calculated edge of an equal-phase face. d, e The XY view (d) and YZ view (e) of the EPSs. The dotted area shows the EPSs work in the SOPTL. f SEM image of the generated photonic textures in the XZ plane. The dotted curve is the calculated edge of the equal-phase face. g, h SEM images of the photonic textures in the XY plane (g) and YZ plane (h). The dotted curves help to visualize the curved stripes in the actual photonic textures corresponding to the simulated results. i Periods of the photonic textures at different depths as a function of the interference order. j Calculated period of the photonic textures as a function of depth with the interference order set as 20. Insets are the observed periods, corresponding to the purple points in the image. k Radii of the EPSs with different interference orders as a function of depth. Insets are the XY view of the photonic textures at different depths (indicated by the dotted lines). The dotted curves in the insets help to visualize the bending degree. Scale bar: 2 µm
